I Decided to go Mutilate for my guild raids because swords is overused and combat daggers I can't stand. And I've found that it can be vastly superior to combat daggers and a bit over combat swords (unless that rogue has glaives.)
Talent Calculator - World of Warcraft <--- this is the build I'm using after 2.4 went live. I didn't take Fleet Footed because when I get my new pair of slayer's boots at some point I'm gonna put 6agi + run speed on them, and quick recovery is kinda useless when you throw expertise into the equation and I'm not someone that takes unneccessary damage in raids.
Now the change to the backstab talent in Assass tree increased my mut dmg by a HUGE margin and I also have a lot of armor pen sorta....well maybe not really ...2540 or something around there. That makes my mut's hit BIG I mean I'm constantly hitting 4.5 - 5k muts on average and upwards of 6.5k when the right buffs / procs are all up at same time.
Armory Link -->
The World of Warcraft Armory
Pay no attention to spec!!! I was messing around with combat fists during ZA and haven't specced back yet for raid on wed! HOW DARE YOU JUDGE SO FAST!!! anyways.
I use 2 1.8s daggers. (Fang of Vashj / Vengeful Gladiator's Mutilator), frickin Illidan dagger DOES NOT DROP FOR OUR GUILD!!!! GRRR. My rotation is kinda odd and depends on the situation / amount of time left on other finishers on boss.
I don't start with Garrote or Ambush. 1. Ambush would blow ass, 2. Garrote uses WAYYYY too much energy for a 1point BLEED effect that even with mangle won't amount to much damage. I walk right up and shiv....38energy lowest 1combo point I can get and adds deadly to mob 99% of the time.
Rotation --> Shiv > SnD > Cold Blood Mutilate (only for bosses) > Mutilate > SnD > Mutilate > Rupture > Mutilate > Envenom > Mutilate > SnD. <---- sometimes I can get off 3 finishers before I have to reapply SnD....it owns. The reason I SnD right after shiv is to put up the 10% dmg proc and then start off with mut's at full dmg.
A lot of the time after I shiv > SnD it will give me energy or combo point or both...so I just go to town with 4 point finishers till a 5 pointer comes up. This rotation just plain owns in dmg with the new 2.4 Assass talent making muts crit 50%+ of the time and having Ashtongue trinket from BT just makes this build own even more.
We have a really good sword rogue in guild named Pris who just came back to raiding when 2.4 came out and he is only partly t6'd out with sword build and can't touch me yet with mut...actually we have 3 sword rogues, Pris / Carv / Zeidrich. <--Another reason why I went daggers lolz?. Anyways none of them have been able to touch my Mut damage I can generate, so hopefully when they get almost all t6'd out or just sunwell geared we can do more testing.
Pris showed me how to use rogue dps spreadsheet and the only thing that can beat out my mutilate gear build in DPS is Warglaives obviously...NOTHING can touch that....like..ever....till expansion makes them useless. Not even Sunwell Swords came close to it. Warglaives Pris got it up to like 756dps above a t6 sword rogue and my Mutilate build was 537dps. Yeah it's way crappier than glaives but what did ya expect. I plugged in sunwell swords to Pris's Glaive build and OMG did the dps drop far...even farther than my mutilate build /shrug. I also opted for mostly 5agi/5hit gems for a miss chance of 2.58% white attacks and 2.25% dodged on all attacks. Which isn't bad at all with a 37.87% crit chance not including mongoose procs or the Assassination talent. Which also in turn makes envenom more viable cause you can use an Envenom finisher and stack it back up in 3s and never lose a tick of dmg from it if you time it right. You have that 3s window after a tick to use finisher and restack with a double mutilate + white attacks.
But I've accepted that mutilate won't be as great in dps as glaives, as such I still want to show undecided rogues that mutilate can be a very very very good alternative to the boring combat dagger crap and still generate insane dmg in raids. I mean how lucky do you have to be to even get a glaive in the first place cause the drop rate ISN'T THAT GREAT. Although some guilds are very lucky with them. In some of the WWS's I got beat by zohar our warrior who took MH glaive when I passed. (hardest thing to do EVER...and no other rogue in raid or online that night).
WWS Link -->
Wow Web Stats
Oh yeah and we haven't had an Enh. Shammy forever so all those numbers in WWS is with no Enh. Shammy

. 2 of the WWS's I was combat crap backstab and 1 of them I was playing with combat fists with S3 fists. The rest are mut's. A thing I hate bout the WWS's is it only shows MH mut dmg...like where it says Max crit 3*** that's MH only...not both hands.../sigh.
If anyone wants to ever talk through game, I play on Draka in DoG guild. Or just e-mail me. I Kinda like talkin bout potential of mutilate.
Sorry for all the dragging on ...sometimes I don't know how to shut up. Errr stop typing.